m_on = new Array();
m_off = new Array();
for(i=0; i<=3; i++){
  m_on[i] = new Image();
  m_off[i] = new Image();
  m_on[i].src = "../images/menu/menu" + i + "on.gif";
  m_off[i].src = "../images/menu/menu" + i + ".gif";
}

flg = 0;

if(document.layers)d = 'document.layers[0].document';
else if(document.all) d = 'document';
else flg = 1;

function m_over(n){
  if(flg == 1)return;
  eval(d + ".img" + n + ".src = m_on[n].src");
}

function m_out(n){
  if(flg == 1)return;
  eval(d + ".img" + n + ".src = m_off[n].src");
}